Refining the token requirements validation errors to be a bit more "friendly"

Preview template in responsive screen (aka Mailchimp)

Advanced attachments - (Attachments that can show like an image gallery) but the system would create drag-n-drop links instead after upload. This would involve sending a PR upstream to Mosaico core.

Use actual thumbnails instead of base placeholders for templates on screen 2.1

Import/manage/delete code through the UI for "base templates"

Conditional content based on groups

We're looking to raise $25k for the above work and have already raised the first $5k (and we havent even launched yet!).

If you would like to get involved, can think of any useful features that we haven't listed or have a particular feature above that you would like to sponsor then please email jamie@compucorp.co.uk and we'll look to get you all joined up with the project!